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post #21 of 27 Old 02-19-2019 Thread Starter
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Re: Cheap Wind Turbine

I have not purchased it, but it's still nagging at my mind as a might-be-fun spring project.



I love this line in the description:
Quote:
The 500W Wind Turbine Generator features a special coating that protects the generator, making it suitable for locations.
Oh thank god, it's suitable for locations. I sure wouldn't want a turbine that isn't suitable for locations.



What I really wonder about is the controller. I have a pair of group 31 batteries and I'd hate to ruin them by overcharging from a cheap controller. My understanding is that wind turbines need to be under load, you can't just disconnect them when the batteries are charged like you can a solar panel. So most wind turbine controllers have some sort of dump output to redirect extra current so that the turbine is still under load but you don't overcharge the batteries. The picture only shows five wires on the controller, so I don't think it's that smart.



It says:
Quote:
CONTROLLER INTRODUCTION] ~ Model: FWS03/06-12 ; Battery Rated Voltage: DC 12V ; Rated Turbine Power: 400W ; Brake Voltage: 14.5V ; Turbine Recovery voltage: 13.2V ; Largest Discharging Current: 20A ; Battery Overcharging Protection: 16.5V (Turn off Load Output) ; Battery Discharging Protection: 10.7V (Turn off Load Output) ; Battery Discharge Recovery Protection: 12V (Recover Load Output)
So it says "overcharging protection" and in another part of the description is says "Integrated automatic braking system" so when the battery is charged does the braking system kick in?



I have a feeling that if I buy this I will ruin one set of batteries, then buy a controller that costs more than the turbine, and end up with a noisy crappy windgen setup that I don't need and spent $600 on.....

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post #22 of 27 Old 02-19-2019
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Re: Cheap Wind Turbine

I bought this one about 5 years ago.
It's fine.
Cheap.
Bearings on the way out now.
It will be OK for another tear or 2

https://sunforceproducts.com/product...ind-generator/
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Re: Cheap Wind Turbine

That one may be suitable for locations but Mark's is good for tears.
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post #24 of 27 Old 02-19-2019
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Re: Cheap Wind Turbine

Seems like those wind turbines in $400 to $600 range have better controllers, better overall build quality and last longer.
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post #25 of 27 Old 02-19-2019
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Re: Cheap Wind Turbine

Yeah. The controller on mine is great.

Only annayebxes is the 20amp cut off. So as soon as a gust hits 25knots and pumps ele trucity in, the damn thing shuts down for 2 minutes.

Other is that wind generates do not like variable wind speeds. They like a steady breeze... And a fair bit of it.

Solar is still better.
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post #26 of 27 Old 02-20-2019
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Re: Cheap Wind Turbine

Quote:
Originally Posted by MarkofSeaLife View Post
I bought this one about 5 years ago.

It's fine.

Cheap.

Bearings on the way out now.

It will be OK for another tear or 2



https://sunforceproducts.com/product...ind-generator/
There is one near me and owner said it was Coleman/Sunforce. He's happy with it but it is a bit noisy compared to others. Quieter than an AirX though.

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post #27 of 27 Old 05-06-2019
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Re: Cheap Wind Turbine

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Originally Posted by Minnesail View Post
Just to be clear, I have a 22' boat that is more than adequately served by a 50 watt solar panel, I have no need for more electricity.

Nonetheless, I found myself idly browsing wind turbines. I came upon this one on Amazon:
Happybuy Wind Turbine Generator 500W DC 24V Wind Turbine 5 Blade

Yes, "Happybuy" brand so you know it must be good!

But seriously, how crappy is this thing likely to be? What's the difference between marine turbines and backyard ones like this?

You know, just in case I want to put an icemaker on my boat.
I was curious about the same thing. I ordered one and installed it. The mechanicals seem quite excellent. Cast aluminum, nice strong blades. The generator is a three phase permanent magnet unit. So regulator is easily remoted. Noise sounds to be as quiet as the best in the Boot Key anchorage.

The charge controller did not work well, so I made my own. I use a three phase full wave puck bridge rectifier, followed by a capacitor, brake switch and a Victron Blue tooth MPPT solar controller.

Average 10 mph wind produces 3-4 amps which keeps my fridge running at night. Maximum current seems to be about 15 amps at 14.4 volts or about 220 watts. I think the 500 watts is only achievable at 24 volts. But then again, I never saw the rated wind speed of 30 mph during my tests. My first circuit used the Victron 30 amp. But next ones will use the 15 amp because rated wind speed seems quite infrequent.

All in all, it worked so well I have ordered two more units which I will set up with similar chargers.

This works in conjunction with 400 watts of solar. We are extreme power users averaging probably 200-300 AH per day. With flooded cells and 14.4 and 24/7 on the hook, batteries never really get to 100%. So over charging is not an issue with us.

Brake switch is there to manual stop it. It only spins very slowly while braked.
Bryce
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Last edited by BryceGTX; 05-06-2019 at 11:16 PM.
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